Trade waste

Trade waste from industrial and commercial business activities can contain oils, grease or chemicals that have an adverse impact on the sewerage system or the environment.

Generally, trade waste requires treatment before it's discharged to the sewer system. This ensures it is compatible with sewerage pipes and treatment systems, and protects:

the health and safety of Western Water staff and customers

sewer assets from corrosion

the quality of recycled water, and

the health of our waterways.

Western Water limits the quality and other characteristics of the trade waste it accepts into the sewerage system. The limits are known as “Trade Waste Acceptance Criteria” and any trade waste meeting these criteria will normally be suitable for discharge to the sewerage system.